header.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
    overflow: hidden;
}

.sea-header__overlay {
    width: 100%;
    height: 65%;
    position: absolute;
    z-index: 1;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(180deg, #FFFFFF 42.8%, rgba(255, 255, 255, 0.75241) 62.11%, rgba(255, 255, 255, 0.62387) 73.59%, rgba(255, 255, 255, 0) 100%);

    mix-blend-mode: screen;

    z-index: 1;
    pointer-events: none;

    opacity: 0;
    transition: opacity 0.2s linear;
}


.sea-header__container {
    position: relative;
    overflow: hidden;
    /* để tránh overlay tràn */
}

.inner-sea-header__container {
    position: relative;
    z-index: 2;
    /* đẩy nội dung lên trên overlay */
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--primary);
    border-radius: 16px;
    padding: 20px;
    height: 77px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    margin-top: 30px;
}

.sea-header__brand img {
    height: 32px;
    width: auto;
    display: block;
}

/* Center nav */
.sea-header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.sea-menu {
    list-style: none;
    display: flex;
    align-items: center;
    margin: 0;
    padding: 0;
    gap: 32px
}

.sea-menu>li {
    position: relative;
}

.sea-menu>li>a {
    font-size: 18px;
    line-height: 28px;
    text-transform: capitalize;
    color: #fff;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.sea-menu>li>a:hover {
    font-weight: 700;
}

/* CTA button */
.sea-header__cta {
    background: #fff;
    color: #c90044;
    border-radius: 12px;
    padding: 12px 20px;
    font-weight: 600;
    font-size: 16px;
    line-height: 24px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 10px 22px rgba(255, 255, 255, .15), 0 8px 20px rgba(201, 0, 68, .22);
}

.sea-header__cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 30px rgba(201, 0, 68, .28);
}

/* Burger (mobile) */
.sea-header__toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1.5px solid rgba(255, 255, 255, .55);
    background: transparent;
    color: #fff;
    place-items: center;
}

.sea-header__toggle span {
    display: block;
    height: 2px;
    width: 18px;
    background: #fff;
    margin: 4px auto;
    border-radius: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 1280px) {
    .inner-sea-header__container {
        padding: 0 28px;
    }

    .sea-header__nav {
        gap: 16px;
    }
}

@media (max-width: 1024px) {
    .inner-sea-header__container {
        padding: 0 24px;
        margin-top: 28px;
    }

    /* .sea-header__overlay {
        height: 32px;
    } */


}

@media (max-width: 992px) {
    .inner-sea-header__container {
        padding: 0 20px;
        height: 72px;
    }

    .sea-header__nav {
        display: none;
    }

    .sea-header__cta {
        padding: 10px 16px;
    }

    .sea-header__cta svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 768px) {
    .inner-sea-header__container {
        padding: 0 16px;
        height: 66px;
        border-radius: 12px;
        margin-top: 24px;

    }

    /* .sea-header__overlay {
        height: 24px;
    } */

    .sea-header__cta {
        padding: 8px 14px;
        font-size: 14px;
        line-height: 14px;
        border-radius: 8px;
    }

    .sea-header__cta svg {
        width: 18px;
        height: 18px;
    }

    .sea-header__brand img {
        height: 30px;
    }
}

@media (max-width: 640px) {
    .inner-sea-header__container {
        margin-top: 20px;
        padding: 14 10px;
        height: 60px;
        border-radius: 8px;

    }

    .sea-header__brand img {
        height: 28px;
    }

    .sea-header__cta {
        padding: 6px 12px;
        font-size: 12px;
        border-radius: 6px;
    }

    .sea-header__cta svg {
        width: 16px;
        height: 16px;
    }
}

@media (max-width: 480px) {
    .inner-sea-header__container {
        margin-top: 15px;
        height: 48px;

    }

    .sea-header__brand img {
        height: 20px;
    }

    .sea-header__cta {
        padding: 4px 8px;
        font-size: 9px;
        line-height: 8px;
    }

    .sea-header__cta svg {
        width: 14px;
        height: 14px;
    }

    /* .sea-header__overlay {
        height: 18px;
    } */
}